Substack won't share official numbers, but it seems like a pretty significant data breach.

The digital publishing platform Substack has told some of its users that their data was stolen in a security breach. The ...

On the heels of Instagram rolling out a Reels app for connected TV, newsletter creators can now offer videos and livestreams to subscribers via Apple TV and Google TV.

Substack states that the security flaw has now been fixed and that a full investigation is underway. There are currently no ...

The hacker claims to have stolen nearly 700,000 Substack user records, including email addresses and phone numbers.

Substack said that customer data was accessed in October 2025, but wasn't discovered until early February.

Substack, the hugely popular online content platform with 50 million active subscribers, has confirmed it has been hacked.

Substack has confirmed a significant data breach that exposed user information, but questions remain about the scale of the breach, and why it remained undetected ...

AI could flood feeds with slop or give creators "more creative leverage," said Substack CEO. The CEO of the newsletter platform said attention is the real scarcity in the media landscape. AI-generated ...

Add Yahoo as a preferred source to see more of our stories on Google. Dominic Lipinski/PA Wire I didn’t go looking for a fight with Britain’s Online Safety Act. But as the CEO of Substack – an online ...

Substack, a newsletter platform, has confirmed a data breach compromising user email addresses and phone numbers ...